[FFmpeg-trac] #7465(avformat:new): MP3 24-bit (fmt:s32p) is displayed in the log, but the transcoded file is not

[FFmpeg]

#7465: MP3 24-bit (fmt:s32p) is displayed in the log, but the transcoded file is
not
-------------------------------------+------------------------------------
             Reporter:  Sami32       |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  minor        |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  MP3 24-bit   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+------------------------------------

Comment (by Sami32):

 I think that MP3 could only be 16-bit.

 FFmpeg real output is different of what was said in the log when
 transcoding.
 The output file analyszed by FFmpeg is the following:

 ffmpeg started on 2018-10-01 at 15:19:31
 Report written to "ffmpeg-20181001-151931.log"
 Command line:
 ffmpeg -report -i MP3Test.mp3
 ffmpeg version N-91977-ge33b28cc79 Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 8.2.0 (GCC)
   configuration: --enable-gpl --enable-version3 --enable-avisynth
 --enable-fontconfig --enable-gnutls --enable-libaom --enable-libass
 --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio
 --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm
 --enable-libilbc --enable-libkvazaar --enable-libmfx --enable-libmodplug
 --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb
 --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-
 librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-
 libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc
 --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp
 --enable-libx264 --enable-libx265 --enable-libxvid --enable-libxml2
 --enable-libzimg --enable-opengl --enable-pthreads --disable-w32threads
 --disable-dxva2 --disable-debug --pkg-config-flags=--static --extra-
 ldflags=-static --extra-cflags='-mtune=generic -mfpmath=sse -msse'
 --cpu=i686 --optflags='-O2 -finline-fun  libavutil      56. 19.101 / 56.
 19.101
   libavcodec     58. 30.100 / 58. 30.100
   libavformat    58. 18.101 / 58. 18.101
   libavdevice    58.  4.103 / 58.  4.103
   libavfilter     7. 32.100 /  7. 32.100
   libswscale      5.  2.100 /  5.  2.100
   libswresample   3.  2.100 /  3.  2.100
   libpostproc    55.  2.100 / 55.  2.100
 Splitting the commandline.
 Reading option '-report' ... matched as option 'report' (generate a
 report) with argument '1'.
 Reading option '-i' ... matched as input url with argument 'MP3Test.mp3'.
 Finished splitting the commandline.
 Parsing a group of options: global .
 Applying option report (generate a report) with argument 1.
 Successfully parsed a group of options.
 Parsing a group of options: input url MP3Test.mp3.
 Successfully parsed a group of options.
 Opening an input file: MP3Test.mp3.
 [NULL @ 08021080] Opening 'MP3Test.mp3' for reading
 [file @ 08021c00] Setting default whitelist 'file,crypto'
 [mp3 @ 08021080] Format mp3 probed with size=8192 and score=51
 id3v2 ver:4 flags:00 len:35
 [mp3 @ 08021080] pad 576 965
 [mp3 @ 08021080] Skipping 0 bytes of junk at 1005.
 [mp3 @ 08021080] Before avformat_find_stream_info() pos: 1005 bytes
 read:32768 seeks:0 nb_streams:1
 [mp3 @ 08021080] demuxer injecting skip 1105 / discard 0
 [mp3float @ 08035f80] skip 1105 / discard 0 samples due to side data
 [mp3float @ 08035f80] skip 1105/1152 samples
 [mp3 @ 08021080] All info found
 [mp3 @ 08021080] After avformat_find_stream_info() pos: 49133 bytes
 read:65536 seeks:0 frames:50
 Input #0, mp3, from 'MP3Test.mp3':
   Metadata:
     encoder         : Lavf58.18.101
   Duration: 00:00:56.38, start: 0.023021, bitrate: 320 kb/s
     Stream #0:0, 50, 1/14112000: Audio: mp3, 48000 Hz, stereo, fltp, 320
 kb/s
     Metadata:
       encoder         : Lavc58.30
 Successfully opened the file.
 At least one output file must be specified
 [AVIOContext @ 08029e80] Statistics: 65536 bytes read, 0 seeks

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7465#comment:2>
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